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CORDIS

Quantum transport in a disordered two-dimensional ultracold Fermi gas

Descripción del proyecto

Ojalá un escritorio abarrotado fuese signo de una mente lúcida y una gran productividad

Una bandada de gansos dispersos que se junta para formar una V organizada mejora así la sustentación de cada uno de sus miembros y reduce la resistencia aerodinámica, lo cual les permite volar hasta un 70 % más lejos con la misma energía. A escala cuántica, muchas cosas son diferentes, como los posibles beneficios del desorden y la emergencia de fenómenos exóticos. El proyecto financiado con fondos europeos VorDIST está estudiando y determinando las características de la combinación de interacciones fuertes y desorden en gases atómicos ultrafríos, un paradigma de la simulación cuántica. Los estudios experimentales mejorarán considerablemente nuestra comprensión del desorden y así nuestra capacidad de aprovecharlo en dispositivos y materiales novedosos.

Objetivo

Disorder is omnipresent in nature and has a strong impact on quantum materials. The paradigmatic example is Anderson localization of a single particle but many more intriguing situations can arise for many-body systems depending on the interplay between interaction and disorder. The metal-insulator and superconductor-insulator transitions, which highlighted the importance of interaction, still remain enigmatic phenomena. Another profound effect of disorder in superconductors takes place in type-II superconductors, which involve quantum vortices. A quantum vortex in a superconductor is highly influenced by the presence of defects and its mobility is the key ingredient for superconductivity. Despite its importance, a clear understanding of disorder physics is still lacking because of unavoidable complexities in condensed matter systems. In this project, we explore disorder physics with ultracold atomic gas.

The ultracold atomic gas system has been recognized as an excellent quantum simulator because it provides an unprecedentedly controllable and clean testbed. Quantum simulations with quantum gas have successfully addressed important, yet unsolved physical problems in many different fields. Here, we will carry out experimental studies of two-dimensional (2D) Fermionic quantum gas under disorder potential. Our first goal is the observation of 2D Anderson localization. Then we will further investigate the interplay between interaction and disorder. We aim to reveal the robustness of the order parameter of superfluid when the superfluid is transformed into an insulating phase. Next, we will obtain a phase diagram of a disordered 2D system. Lastly, we want to address the paradigmatic problems of vortex matter in a superconductor, both in a single and a bilayer system. Thus, we can unveil vortex dynamics in disordered superfluids.

Régimen de financiación

MSCA-IF-EF-ST - Standard EF

Coordinador

CONSIGLIO NAZIONALE DELLE RICERCHE
Aportación neta de la UEn
€ 183 473,28
Dirección
PIAZZALE ALDO MORO 7
00185 Roma
Italia

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Región
Centro (IT) Lazio Roma
Tipo de actividad
Research Organisations
Enlaces
Coste total
€ 183 473,28